What Is the Idaho Probate Code and How Does It Work?

The Idaho Probate Code, set out in Title 15 of the Idaho Code, governs how a deceased person’s estate is validated, administered, and distributed. It defines three probate paths based on estate size and complexity, assigns duties to the person running the estate (called a “personal representative” rather than an executor), sets the order in which debts are paid, and tells the court when an estate can be closed. Some assets never touch the code at all because they transfer automatically at death.

The Three Probate Paths

Idaho offers three ways through probate, and the right one depends on the estate’s size, whether anyone is likely to contest the will, and how much court oversight makes sense.

Informal Probate

Most uncontested estates go through informal probate. The applicant files paperwork with the court registrar instead of petitioning a judge, and the registrar issues a statement authorizing the personal representative to proceed.¹ There is no hearing unless someone objects. The representative still prepares an inventory, notifies creditors, pays debts, and distributes assets, but does so without court approval at each step.

Formal Probate

Formal probate puts a judge in the middle of the process. It is used when heirs disagree, when the will’s validity is in question, or when the estate is unusually complex. An interested person petitions the court for a hearing and an order either admitting the will to probate or declaring that the deceased died without a valid will.² The judge appoints the representative and may need to approve major decisions, such as selling real estate. It takes longer and costs more, but it provides finality.

Small Estate Affidavit

Estates worth $100,000 or less after liens and debts can skip probate entirely. At least 30 days after the death, a successor presents an affidavit to whoever holds the property — a bank, brokerage, or employer — stating the estate’s value, that 30 days have passed, and that no personal representative has been appointed or applied for anywhere. The institution then releases the assets directly.³ The affidavit covers personal property and financial accounts only, not real estate, and it cannot be used once a personal representative has been appointed. Successors who collect this way can still be held accountable to creditors and to the Idaho Department of Health and Welfare for Medicaid recovery claims.

What Skips Probate Entirely

For many Idaho families, non-probate assets make up most of the estate’s value. The code and related statutes allow several categories of property to pass directly to a new owner at death:

Real estate, bank accounts, or vehicles held in joint tenancy with right of survivorship pass to the surviving owner, who usually just needs to present a death certificate.
Community property held with a right of survivorship designation passes in full to the surviving spouse automatically. Because Idaho is a community property state, only the deceased spouse’s half of ordinary community property enters probate at all.⁴
Payable-on-death and transfer-on-death accounts pass to the named beneficiary. The beneficiary designation overrides anything the will says about the same asset.
Retirement accounts and life insurance pay out to the designated beneficiary. If no beneficiary is named or that person has already died, the asset may fall back into the probate estate.
Property properly transferred into a revocable or irrevocable trust during life passes under the trust terms rather than through probate.

What the Personal Representative Must Do

Idaho treats a personal representative as a fiduciary held to the same standard of care as a trustee. The code requires the representative to settle and distribute the estate “as expeditiously and efficiently as is consistent with the best interests of the estate.”⁵ That duty runs through every task, from safeguarding property to deciding when to sell.

Within 30 days of being appointed, the representative must send written notice to all heirs and anyone named in the will. The notice includes the representative’s name and address, whether a bond was filed, and which court holds the paperwork. Failing to send it is a breach of duty, though it does not invalidate the appointment.⁶

Within three months of appointment, the representative must prepare an inventory of everything the deceased owned at death, listing each item in reasonable detail with its fair market value as of the date of death and any debt attached to it. Copies go to anyone who requests one. The original can be filed with the court, but filing is optional.⁷ Professional appraisals for real estate, business interests, or unusual personal property head off disputes about value later.

A bond is generally not required in informal probate unless the will demands one or the court orders it. In formal probate, the court can require a bond but will waive the requirement if the will relieves the representative of it, unless an interested party asks for bond and the court agrees. Banks and trust companies acting as representatives are exempt.

The code also entitles a representative to “reasonable compensation” for the work, without specifying a percentage or formula. What counts as reasonable depends on the estate’s size, complexity, and the time the work demands. A representative can renounce a fee set in the will and claim reasonable compensation instead, or file a written renunciation to waive compensation.⁸

Creditors and the Order Debts Get Paid

The code allows (but does not require) the personal representative to publish a notice to creditors once a week for three consecutive weeks in a local newspaper. That publication gives creditors four months from the first publication date to submit claims or lose the right to collect.⁹ Skipping publication is almost always a bad idea, because without it the four-month clock never starts and creditors can surface late.

The representative can also mail direct notice to a known creditor. A creditor who receives mailed notice has four months from the publication date or 60 days from the mailing, whichever is later, to file a claim.

When the estate cannot pay everyone, the code sets a strict priority:

Administrative costs and expenses of running the estate
Reasonable funeral expenses
Debts and taxes with federal priority
Medical and hospital expenses from the deceased person’s last illness
Debts and taxes with state priority
All other claims

No creditor within a class gets preference over another in the same class, and a matured debt does not jump ahead of unmatured debts in the same class.¹⁰ Paying a lower-priority creditor before a higher-priority one can expose the representative to personal liability.

Taxes the Estate May Owe

Idaho does not impose a state estate tax. The state’s estate tax expired in 2004, and Idaho has no inheritance or gift tax either.¹¹ Federal obligations still apply.

The federal estate tax exemption for 2026 is $15,000,000 per person.¹² Estates below that threshold owe no federal estate tax. Even for estates below it, a surviving spouse may want the representative to file Form 706 to elect “portability” of the unused exemption, which transfers the deceased spouse’s unused amount to the survivor for later use. The election requires a timely filed Form 706, typically within nine months of death.

The representative must also file the deceased person’s final federal and state income tax returns for the year of death. If the estate earns income during administration (interest, rent, proceeds from sales), the representative files a separate estate income tax return on Form 1041 and first obtains a federal Employer Identification Number for the estate using Form SS-4.¹³

How Assets Get Distributed

Distribution happens only after debts, taxes, and administrative expenses are resolved. If the deceased left a valid will, assets go to the people named in it. When the will is unclear or silent on a particular asset, the representative can ask the court for guidance.

When There Is No Will

When someone dies without a will, Idaho’s intestacy rules control. Any property not disposed of by a valid will passes under a statutory formula.¹⁴ The surviving spouse’s share depends on whether the property is separate or community:

The deceased spouse’s half of community property passes entirely to the surviving spouse.
If there are no surviving children or parents, the surviving spouse takes all separate property.
If there are surviving parents but no children, the surviving spouse takes half of the separate property.
If there are surviving children, the surviving spouse takes half of the separate property.

With no surviving spouse, separate property passes to children, then parents, then siblings, following the standard line of descent.¹⁵

When the estate includes property that cannot be divided cleanly, such as a family home left equally to three siblings, the representative has authority to sell and distribute the proceeds.

Closing the Estate

An estate cannot be closed until at least six months after the personal representative’s original appointment. To close, the representative files a verified statement with the court confirming that the creditor claims period has expired, that valid claims and taxes have been paid or otherwise addressed, that assets have been distributed to the people entitled to them, and that a full written accounting has gone to every affected beneficiary and unpaid creditor.¹⁶

If no court proceedings involving the representative are pending one year after the closing statement is filed, the appointment officially terminates.

Common Disputes Under the Code

Challenges to a will typically argue that the deceased lacked mental capacity, that someone exerted undue influence, or that the will was not properly signed and witnessed. These challenges go through a formal testacy proceeding, where the court holds a hearing and evaluates the evidence.² Idaho law imposes time limits on these challenges, so a would-be contestant should act quickly.

Disputes also arise over the representative’s own conduct. Beneficiaries who believe the representative is mismanaging assets, making improper payments, or putting personal interests ahead of the estate’s can petition the court for removal. A representative found to have breached the trustee-level fiduciary duty the code imposes can face personal liability for any losses the estate suffers.⁵

1
Idaho State Legislature. Idaho Code 15-3-301 – Informal Probate or Appointment Proceedings – Application – Contents
2
Idaho State Legislature. Idaho Code 15-3-401 – Formal Testacy Proceedings – Nature – When Commenced
3
Idaho State Legislature. Idaho Code 15-3-1201 – Collection of Personal Property by Affidavit
4
Idaho State Legislature. Idaho Code 15-6-403 – Community Property With Right of Survivorship
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Idaho State Legislature. Idaho Code 15-3-703 – General Duties – Relation and Liability to Persons Interested in Estate – Standing to Sue
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Idaho State Legislature. Idaho Code 15-3-705 – Duty of Personal Representative – Information to Heirs and Devisees
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Idaho State Legislature. Idaho Code 15-3-706 – Duty of Personal Representative – Inventory and Appraisement
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Idaho State Legislature. Idaho Code 15-3-719 – Compensation of Personal Representative
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Idaho State Legislature. Idaho Code 15-3-801 – Notice to Creditors
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Idaho State Legislature. Idaho Code 15-3-805 – Classification of Claims
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Idaho State Tax Commission. Estates and Taxes
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Internal Revenue Service. What’s New – Estate and Gift Tax
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Internal Revenue Service. Information for Executors
14
Idaho State Legislature. Idaho Code 15-2-101 – Intestate Estate
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Idaho State Legislature. Idaho Code 15-2-102 – Share of the Spouse
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Idaho State Legislature. Idaho Code 15-3-1003 – Closing Estates – by Sworn Statement of Personal Representative